[am.bu.la.cral] adj (1836): of, relating to, or being any of the radial areas of echinoderms along which run the principal nerves, blood vessels, and elements of the water-vascular system "~ grooves"
AMBULACRAL
Meaning of AMBULACRAL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012